AM26LS31C 5V 32mA RS422, RS485 Driver SOIC-16

Description

AM26LS31C 5V 32mA RS422, RS485 Driver SOIC-16 The AM26LS31C is a quad, complementary output, differential line driver designed for digital data transmission over balanced lines. It converts single-ended TTL/CMOS logic signals into balanced differential signals that comply with the ANSI TIA/EIA-422-B and ITU V.11 standards. This chip is essential for creating noise-immune communication links in industrial settings, as the differential signaling cancels out common-mode noise picked up by cables. Each of the four independent drivers features tri-state outputs and dual enable controls (active-high G and active-low /G ), allowing for flexible bus management. When disabled, the outputs enter a high-impedance state, making the device suitable for shared bus applications. Built with low-power Schottky technology, it offers a good balance of speed and power efficiency, reliably driving twisted-pair or parallel transmission lines. Features: Complies with ANSI TIA/EIA-422-B and ITU V.11 standards. Operates from a single 5V power supply. TTL-compatible inputs. Complementary outputs for each channel. High output impedance when powered off or disabled. Complementary output-enable inputs (active high and active low). Designed for balanced line transmission. Available in military-grade qualified versions. Specifications: Parameter Symbol Min Typ Max Unit Condition Supply Voltage Vcc 4.75 5 5.25 V AM26LS31C High-Level Input Voltage VIH 2.0 – – V Low-Level Input Voltage VIL – – 0.8 V High-Level Output Voltage VOH 2.5 – – V IOH = -20mA Low-Level Output Voltage VOL – – 0.5 V IOL = 20mA Propagation Delay tPLH, tPHL – 20 – ns CL = 30pF Output Short-Circuit Current IOS -30 – -150 mA Supply Current (All disabled) ICC – 32 80 mA Operating Temperature TA 0 – 70 °C AM26LS31C Pinout: Pin Name I/O Description 1 1A I Logic Input for Driver 1. 2 1Y O Non-Inverting Output for Driver 1. 3 1Z O Inverting Output for Driver 1. 4 G I Output Enable (Active HIGH). 5 NC – No Connection. 6 2Z O Inverting Output for Driver 2. 7 2Y O Non-Inverting Output for Driver 2. 8 2A I Logic Input for Driver 2. 9 3A I Logic Input for Driver 3. 10 3Y O Non-Inverting Output for Driver 3. 11 3Z O Inverting Output for Driver 3. 12 /G I Output Enable (Active LOW). 13 4Z O Inverting Output for Driver 4. 14 4Y O Non-Inverting Output for Driver 4. 15 4A I Logic Input for Driver 4. 16 VCC PWR Supply Voltage (+5V). Footprint: Applications: Motor encoder interfaces. Industrial field transmitters (pressure, temperature sensors). RS-422/RS-485 data communication networks. Professional video and imaging equipment. Long-distance digital data transmission. Packages: 1x AM26LS31C 5V 32mA RS422, RS485 Driver SOIC-16. Documents: AM26LS31C Datasheet.

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